6 ms·
Are concrete crossties pre-stressed? It makes sense now I think about it, but I'm just surprised more effort than "pour concrete into a mold" goes into such an
by simonrobb 7y ago
Are concrete crossties pre-stressed? It makes sense now I think about it, but I'm just surprised more effort than "pour concrete into a mold" goes into such an unassuming structural member.
- logfromblammo 7y agoI'd guess that poured concrete is not cost-competitive with timber crossties, and pre-stressing is the only way to make them cheaply enough to compete.